BMW 7 Series: Alternator With Drive And Mounting
REMOVING AND INSTALLING OR REPLACING ALTERNATOR (N63)
Necessary preliminary tasks
- Switch off ignition.
- Disconnect BATTERY NEGATIVE LEAD.
- Remove ACOUSTIC COVER.
- Remove left and right INTAKE FILTER HOUSINGS.
- Remove alternator DRIVE BELT.
- Remove intercooler EXPANSION TANK.
- Remove FUEL FEED LINE.
IMPORTANT: Risk of damage! Cover radiator.
Release clamps (1).
Tightening torque 13 71 8AZ.
Release clamps (2).
Replace clamps (2).
Detach both charge-air ducts (3) and remove.
Check gaskets on turbocharger, replacing if necessary.
.png)
Fig. 43: Identifying Charge-Air Ducts And Clamps
Picture shows the left side, the procedure for the right side is identical.
Detach hoses (1) from clean-air pipe.
Release screw (2).
Tightening torque 13 71 1AZ.
Detach clean-air pipe (3) in direction of travel from turbocharger.
Check seals on clean-air pipe, replacing if necessary.
.png)
Fig. 44: Identifying Clean-Air Pipe, Hoses And Screw
Pull off cable duct (1) from cable holder (2) in upward direction.
Release cable (3) from holder.
.png)
Fig. 45: Identifying Cable Duct, Cable Holder And Holder Cable
Pull off plug (1).
Detach cover (2) and release nut underneath.
Tightening torque 12 42 1AZ.
Installation: Reinstall cover (2) without fail risk of short circulating! Disconnect battery positive lead (3) from alternator.
Remove FUEL FEED LINE (4).
.png)
Fig. 46: Identifying Plug, Cover, Battery Positive Lead And Fuel Feed Line
Release screws (1) on turbocharger coolant pump (2).
Place turbocharger coolant pump to one side. Do not remove turbocharger coolant pump.
.png)
Fig. 47: Identifying Turbocharger Coolant Pump Screws
Picture shows the left side, the procedure for the right side is identical.
Release screws (1).
Tightening torque 12 31 1AZ.
.png)
Fig. 48: Identifying Turbocharger Coolant Pump Screws (Left Side)
Remove alternator (1) together with bracket (2) in direction of travel.
.png)
Fig. 49: Identifying Alternator And Bracket
NOTE: Check stored fault message.
Add final details to vehicle.
Now clear the fault memory.
REPLACING ALTERNATOR BELT PULLEY
Notes
Remove and install alternator drive belt.
Depending on alternator type, grip shaft with:
- hexagon socket
- multi-tooth socket or
- Torx socket wrench
Release nut with special tool 12 7 110.
Installation: Tightening torque 12 31 2AZ/3AZ.
.png)
Fig. 50: Releasing Nut With Special Tool (12 7 110)
REPLACING ALTERNATOR BELT PULLEY (WITH OVERRUNNING CLUTCH)
Notes
Remove and install alternator drive belt.
Grip alternator shaft with:
- internal serration
Release nut with special tools 12 7 120.
Installation: Tightening torque 12 31 3AZ.
.png)
Fig. 51: Releasing Nut With Special Tools (12 7 120)
READ NEXT:
Regulator
REPLACING VOLTAGE REGULATOR
Necessary preliminary tasks
Switch off ignition
Disconnect battery negative lead
See NOTES/INFORMATION ON REMOVING AND INSTALLING CONTROL UNITS
Remove alternator
Bosc
Starter With Mounting
REMOVING AND INSTALLING/REPLACING STARTER (N63)
Necessary preliminary work
Switch off ignition.
Disconnect BATTERY EARTH LEAD.
Remove right ENGINE SUPPORT ARM.
Release connector (1) and remove.
SEE MORE:
Active Rear Axle Kinematics
REMOVING AND INSTALLING/RENEWING INTEGRAL ACTIVE STEERING
Necessary preliminary tasks
LOWER REAR AXLE SUPPORT
Remove BOTH TOE ARMS
IMPORTANT: Screws (1) must not be released during removal!
Fig. 118: Identifying Screws
Unlock and disconnect plug connections (1) from steering.
Release screw (2)
Replacing Front Left Or Right Coil Spring
Notes
IMPORTANT: Both coil springs on the relevant axle must be replaced only in
the event of
corrosion breakage!
The coil spring is allocated in the Electronic Parts Catalogue (EPC) under
the menu item "Spring table" after the
vehicle identification number has been entered and the relevant option
